Floating-metal-saving device for concentrators.



No- 829,884. PATENTED AUG. 28, 1906. G. L.- MORGAN & J. F. HOHEISEL. FLOATING METAL SAVING DEVICE FOR GONOENTRATORS.

APPLICATION FILED APR.11, 1904.

2 SHEETSSHEET 1.

6% M wvew fow 7 I V I 555 No. 829,884. PATENTED AUG. 28, 1906. G. L. MORGAN & J. P, HOHEISEL.

FLOATING METAL SAVING DEVICE FOR GONGENTRATORS. APPLICATIONIILED APR. 11, 1904.

2 SHEEISSHEET 2.

vwamfoz q Wtwe/aoeo v @%@%w% @M'm I Qttomm UNITED ST TES PA'rEN'r barren CLAUDE L. MORGAN ANDJOSEPH F. HOHEISEL, or IDAHO SPBiNGS,-

- COLORADO.

' Specification of Letters Patent.

Patented Aug. 28,1906.

Application filed A rlllLlQO. Saria1No.202,679.

To all whom it may concern 'Be it known that we, CLAUDE L. MORGAN and JOSEPH F. HQHEISEL, citizens of the United States of America, residingat Idaho Springs, in the county of Clear Creek and State of Colorado, have invented certain new and useful Improvements in Floating-Metal- Saving Devices for Concentrators; and'we do declare the followin 'to be a- "full, clear, and exact description or the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification. a I a Our invention relates to improvements in means for saving the light portion of the metallic values sometimes termed slimes, which float upon the top of the water and under ordinary conditions are lost with the gangue.

Our improvement is adapted for use in connection with concentrating-tables of the Wilfley type, in which the concentrating-surface of the table is provided with longitudinallydisgposed riflies extending lengthwise of the ta e or in the direction of motion, thetabl'e being transversely inclined and having a movement inthe direction of the riffles', the

material to be treated, as well as the washwater, being fed u on the upper edge of the table. Inthis' sty e of tables the gangue is carried transversely across the table and dis charged over its lower longitudinal edge} while the concentrates are carried lengthwise I of the table and discharged at its rear or tail extremity. In the treating of some classes of material a veryv important roportion of the values are in the form of s es or floating material, which in this style of table and under theconditions above outlined natu- V rally are carried transversely across the table and lost with the gangue. Our improvement is intended to overcome this difficulty and it consists in equippin the table With a raised riflie or retarding evice located near its gangue-discharge edge, said retarding device struction herein illustrated and which will in regular order be described in detail,;we have chosen to place our retarding-device a PQSi: tion where a third-riflie from the lower, or gangue-discharge edge of the table would be placed,- and for this-reason the riffle come-- sponding to this position is removed, or it may be said to beraised to "form the retarding slime-saving device. This retarding'device maybe supported in any suitable manner It is preferred, however, to connect; it with suitable means whereby it may be readily be vertically adjustableat will, since it may other instances, and to this end in thQdLitlVW' .be desirable in some instances to have a t ihgs the retarding device is threaded on 'a number of bolts which are journaled in the.

table and rovided attheir upperextremities I with han -cranks, whereby as the bolts are turned the retarding device is made to travel up or down at will, according to the direction of the bolts movement.

Having'brieflyoutlined our improved construction, as well as the function it is intended to perform, we willproceed to describe the same in detail, reference being made to the accompanying drawings, in which is illustrated an embodiment thereof.

centrating-table equipped with our improvement.

ing-table provide with our improved device,

the same being shown on a smaller scale.-

Fig. 3 is a top view illustrating a modified form of construction shown on a lar er scale,-

Fig. 4 is a plan view of a concentrating table" provided with our improvements, the table Fig 2 is a {plan view of a'concentrat I The same reference characters indicate the same parts in allthe views. I

Let A designate the body of a suitable con centrating-table, which, as shown in the drawings, is transversely inclined and provided with a number of rifiies B. As shown in the drawings, these rifles terminate ina diagonal line across the table, being of uri. equal length, the riflie highest on the table, being'shortest and the other riffles increasing in length toward the lower or gangue-dis adjusted in order that the saiddeviceflmay charge ed .e of the table. In the drawings and a fly-wheellI/I to the opposite end of the the two ri es adjacent the gangue-discharge 1 shaft.

edgeextend the whole length of the table,

while immediately above the next to the lowest Title is located our improved device, which is designated by the reference, character 0. This device consists of a bar composed of any suitable material and may be of any desired size. It takes the place of one of the riflies on the table, but may be of different size, if desirable or required. This device C, which we term the retarding device, since it stops the slimes or floating material from passing downwardly over the table with the gangue, is mounted above the upper surface of the table; but its bottom or lower edge occupies a position beneath the level of the pul D on the-table, (see Fig. 1,) whereby the s imes E ,or floating values are prevented from escaping with the gangue and are carried over the tall or concentrates-discharge end of the table in the direction indicated by the arrows,

the said tail of the table being located at the right in Fig. 2 of thedrawin s. As heretofore intimated, this retarding evice or means for saving the floating metallic values, may be supported in the required position in any suitable manner. In the drawin s it is shown provided with a number of t eaded o enings, through which are passed a number 0 bolts F, which are assed upwardly through the body of the tab e and journaled therein, their threaded portions being passed through the threadedopenings of the floating-.mineralsaving device. The heads of these bolts are let into the sockets in the under surface of the table, and the bolts are retained in place by plates G, secured to the lower surface of the table b screws H, whereby the said plates are flus with the lower surface of the table. To the top of each bolt F above the device 0 is secured a hand-crank I for ease of manipulation. hand-cranks are turned the retarding device 0 may be raised or lowered, as may be desired, according as it is necessary to lower the bottom of the device C or raise it in order that it'may occupy a proper position with reference to the depth of pulp orwater upon the table.

. In Fig. ,4 of the drawings we have illuswise thereo whereby the concentrates are made to travel rearwardly on the table toward the right, referri to Fig. 4. Any suitable mechanism may em loyed for impprting this movement. In t e drawings, M

ustrates a suitable stationary sup ort, in which is journaled a shaft M, provld dd with a cam M actin on an abutment M connected with the ead of the table by rods M. Between'the table and the stationary crossiece M is located a coiI-sprin M". A ulihy M is "applied to one end 0 the shaft M It will be understood that as these- As the shaft M is rotated the cam acts on the abutment M to draw thetable rearwardly, and as the cam leaves the abutment the table is thrown forwardly through the recoil of the spring M. The cam again engages the abutment in time tocheck the spring actuated movement of the table, whereby the concentrates are caused to continue their forward movement by the stoppi of the table. As this movement is continuie d the concentrates are carried forwardly and discharged at the rear open extremity of the table.

Nothing is claimed onthe operating mechanism in this application, sincewe are aware that many devlces may be employed for this purpose; neither do we claim that we have illustrated the best mechanism for imparting the reciprocatin movement. .The device shown is only for t e purpose of illustrating one way of imparting a lon itudinally reciprocatin movement or a vi ratory action to a tab e of this character.

In'treating ore upon a table of this class the pul to be treatedmaybe said to be discharge into a feed-box J and pass therefrom to the body of the table at its upper ed e,

At t e which is designated K in Fig. 2. same time that'the material to be treated is fed to the table wash-water is alsofed thereto at the upper edge K. The vibrating lon tudinal movement being imparted to t e table, the concentrates are carried toward the right, referring to Fig. 2, while the .gangue is'carried downwardly and discharged over the lower edge L. I The slimes or floatin values, however, are caught by the device and carried along in the direction of the ary .tables 0 this class. We have, however,'called attention to the general operation of the table which it is believed Wlll be as readily understood from the foregoing description as if it had been full illustrated, since mechanisms of this kin are very common nowadays, and while many diflerent types may be em loyed they all seek to perform substantia y the same function.

- In Fig. 3 of the drawings 'we have illustrated a construction for use when it is desired to form a device 0 of wood. In this case it would not be practicable to thread the bolts F in the wood, and consequently a sleeve C, provided with exterior ribs C to preventit from turning in the wood, is employed, the sleeve being forced into an opening formed in the wood and forming a nut which the threaded part of the bolt engages.

Having thus described our invention, what we claim is 1. The combination with a transverselyinclined concentrating-table having a movement whose tendency is to cause the material to travel longitudinally thereon toward the rear or concentrates-discharge end of the table, the said end being open and the table having lon itudinally-disposed riflies, of a retarding device for saving the floating values, said device being supported above the bottom of the table, its lower edge, however, occupying a osition beneath the top of the pulp or water t ereon.

2. The combination with a transverselyinclined concentrating-table having a movement whose tendency is to carry the material from the head toward the tail of the table, I

the said tail end of the table being open to permit the dischar e of the concentrates, of a retarding device 'sposed longitud'nally of the table and su ported thereon bove its concentrating-sur ace, whereby the pulp is allowed topass thereunder,'the lower edge of the said device, however, occupyin a position below the top of the water or pu p on the table whereby the travel of the floatin -metal values or slimes is arrested, and t e said values separated from the gangue.

3. The combination with a transverselyinclined concentrating-table having longitudinally-disposed rifiles, and means for imparting to the table a longitudinallyreciprocating movement whereby the material is caused to travel toward the tail or concentrates-discharge end of the table, the said end of the table being open to permit said discharge, of a bar sup or'ted near the lower or gangue-discharge e e of the table and occupying a position a ove its concentratingsurface whereby the pulp is allowed to flow thereunder, the lower edge of the bar occupying a position below the top of the water or pulp on the table, whereby the floating or metallic values or slimes may be arrested in their downward travel with the gangue, and

- caused to travel towardithe concentrates end of the table.

4. The combination with a transverselyincl ned concentrating-table having a movement whose tendency is to cause the material to travel lon itudinally thereon toward the rear of the ta le which is open to permit the discharge of the concentrates, the table having longitudinally-disposed 'rifiies, of a retarding device located adjacent the lower or gangue-discharge edge of the table and in the path of the flow of the gangue across the table, the said device being raised above the bottom or concentrating surface of the table, its lower edge occupying a position below the top of the water or slimes thereon, the said device being vertically adjustable on the table. 5. The combination with a transverselyinclined concentrating-table having a movement whose tendency is to cause the material to travel longitudinally thereon toward the' rear or concentrates-discharge end of the table, the said end of the table bein open to ermit such discharge, the said tablehaving ongitudinally-disposed riflies, of a retarding stri or riflie arranged along the table in the path of the travel of the gangue thereon, the said retarding strip or riffie being provided with threaded openings, bolts journaled in the bottom of the table and having threaded arts engagin the openings in theretarding evice, a han -crank ap lied to the upper extremities of the bolts w ereby the retarding device may be vertically ad'usted at will,'the said device bein raised a ove the concentrating-surface o the table and its bottom or lower edge being located beneath the top of the pulp or water thereon.

I In testimony whereof we afiix our signatures in presence of two witnesses.

CLAUDE L. MORGAN. JOS. F. HOHEISEL. Witnesses R. J. DAVIES, W. RoBERTs. 

